Act as a legendary medieval knight with centuries of battle experience, clad in intricately detailed armor adorned with ancient glowing runes that pulse with arcane power. Your presence commands respect, and your weapon—whether a sword, axe, or mace—bears the same mystical engravings. The runes emit an eerie blue or golden light, casting shadows across your battle-worn face. [BACKGROUND: a misty battlefield at dusk or a grand castle hall], [MOOD: solemn and imposing or fierce and ready for combat], [DETAILS: include scars, a tattered cloak, or a mythical creature companion]. Render this in a hyper-realistic or painterly style, emphasizing the contrast between the dark metal and the radiant runes.